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| author | Sam Gross <colesbury@gmail.com> | 2024-09-12 16:37:06 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-09-12 16:37:06 (GMT) |
| commit | b2afe2aae487ebf89897e22c01d9095944fd334f (patch) | |
| tree | 3ffa3ebfe3c69cd21968ce76d8d7cb2f325ff6d3 /Misc/NEWS.d/next | |
| parent | 4ed7d1d6acc22807bfb5983c98fd59f7cb5061db (diff) | |
| download | cpython-b2afe2aae487ebf89897e22c01d9095944fd334f.zip cpython-b2afe2aae487ebf89897e22c01d9095944fd334f.tar.gz cpython-b2afe2aae487ebf89897e22c01d9095944fd334f.tar.bz2 | |
gh-123923: Defer refcounting for `f_executable` in `_PyInterpreterFrame` (#123924)
Use a `_PyStackRef` and defer the reference to `f_executable` when
possible. This avoids some reference count contention in the common case
of executing the same code object from multiple threads concurrently in
the free-threaded build.
Diffstat (limited to 'Misc/NEWS.d/next')
| -rw-r--r-- | Misc/NEWS.d/next/Core_and_Builtins/2024-09-10-20-25-00.gh-issue-123923.A7uxqa.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-09-10-20-25-00.gh-issue-123923.A7uxqa.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-09-10-20-25-00.gh-issue-123923.A7uxqa.rst new file mode 100644 index 0000000..b7bc965 --- /dev/null +++ b/Misc/NEWS.d/next/Core_and_Builtins/2024-09-10-20-25-00.gh-issue-123923.A7uxqa.rst @@ -0,0 +1,4 @@ +The ``f_executable`` field in the internal :c:struct:`_PyInterpreterFrame` +struct now uses a tagged pointer. Profilers and debuggers that uses this +field should clear the least significant bit to recover the +:c:expr:`PyObject*` pointer. |